What does power set mean?
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Power Set:
The collection of all subsets of set A is called the power set of A. It is denoted by P(A). In P(A), every element is a set.
For example;
If A = {p, q} then all the subsets of A will be
P(A) = {∅, {p}, {q}, {p, q}}
Number of elements of P(A) = n[P(A)] = 4 = 22
In general, n[P(A)] = 2m where m is the number of elements in set A.
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